Agent hung up on me mid query

I called the number I was given BY a Nedbank agent to discuss a credit card in arrears. The number I was given took me through to a mumbling and rude man who said it was the wrong dept. I was then transferred FIVE times to equally rude consultants, all saying it's not their dept. When I finally was connected to the right dept. I spoke to a lady Nonkhululeku who was not only unhelpful but when I asked her if she could explain what options were available to me to make right, (I am not a banker and do not know what options there are), which is why I was calling, instead of answering my question she just put the phone down on me. ****** useless service from Nedbank. Rude! After being pushed from pillar to post and then hung up on, I was unable to find a solution.